Facebook apps is abkut 67 mb on playstore and take around 200-250 mb of RAM.Facebook App requires lots of Data even we keep low data mode on. Even after installing Facebook app we can not messeage on This app we have to install additional Facebook Messenger app which is also of 50 and take 150 mb of RAM. So for using Facebook by app we have to download 120 mb of app and requires 450 mb of RAM which hangs the phone.In addition facebook app requires update in 2-3 days and that update are averagely 30-35 mb. In update nothing come new just ’Bug fixes and speed improve’In app when we play video from facebook and leave app by home key than some time video plays in background.Worst location servies in Facebook App as it never show true location.Facebook live requires 2 to 3 minutes just to check connections.This is the worst and irritating app by such a giant company.